First of all, ultraviolet rays are an important factor for the excessive production of melanin and the serious imbalance of skin pigment. If the ultraviolet rays are too strong, if the time and intensity of the direct skin epidermis are increased, the melanin will also increase rapidly; moreover, because the temperature rises and the weather is dry, the skin moisture is more likely to evaporate and lose.
Secondly, under the condition of "continuous loss of water" and "continuous secretion of oil", the water and oil of the skin are out of balance, and the external oil and internal dryness, clogged pores, etc. appear, and the melanin at the bottom of the skin gradually appears on the skin, and the color becomes more and more serious. deep.
To avoid spots, the most important thing is to replenish water and adjust the inner balance of the skin.
Pigmentation belongs to hyperpigmentation of the skin, and the mechanism is the increase in the number or activity of melanocytes.
Therefore, to lighten spots, you must first avoid prolonged exposure to the sun; prevent various ionizing radiation; do not use "quick-acting freckle cream" that contains harmful substances such as hormones, lead, and mercury; do not use long-term scrub skin products; use oil control products as little as possible , The balance of water and oil is the most scientific. Don't blindly control oil, but understand the physiological laws of our skin.